24.05.2021 update: 

• case was designed for the raspberry pi zero W, it will not fit the older raspberry pi zero (different SMD board layout).
• a remixed version that will fit the old pi zero and also adds cut outs for the pin header can be found here: https://www.thingiverse.com/thing:4806207

Slim Raspberry Pi Zero W case, with / without screws, no pin header.

I recommend using the screws bottom version because, even though the 3d printed one works, due to being a very tight fit, it will break when taking apart the case to remove the pi.

See pictures for more details!

Print instructions

check the .3mf file